Interface

(26) FLUSH CACHE (X’E7’)

This command is used to order to write every write cache data stored by the device into the medium. BSY bit is held at "1" until every data has been written normally or an error has occurred. The device performs every error recovery so that the data are read correctly.

When executing this command, the reading of the data may take several seconds if much data are to be read.

In case a non-recoverable error has occurred while the data is being read, the error generation address is put into the command block register before ending the command. This error sector is deleted from the write cache data, and the remaining cache data is written into the medium by the execution of the next Flush Cache command.

At command issuance (I-O register contents)

1F7h(CM)

1

1

1

0

0

1

1

1

1F6h(DH)

x

x

x

DV

xx

 

 

 

1F5h(CH)

xx

 

 

 

 

 

 

 

1F4h(CL)

xx

 

 

 

 

 

 

 

1F3h(SN)

xx

 

 

 

 

 

 

 

1F2h(SC)

xx

 

 

 

 

 

 

 

1F1h(FR)

xx

 

 

 

 

 

 

 

At command completion (I-O register contents to be read)

1F7h(ST)

Status information

 

 

1F6h(DH)

x

x

x

DV

xx

 

 

 

 

 

 

1F5h(CH)

xx

 

 

 

 

1F4h(CL)

xx

 

 

 

 

1F3h(SN)

xx

 

 

 

 

1F2h(SC)

xx

 

 

 

 

1F1h(ER)

Error information

 

 

 

 

 

 

 

 

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C141-E202-01EN

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Fujitsu MHU2100AT manual Flush Cache X’E7’